Open AccessA Study on Quasi‐orthogonal M ‐ary Chirp Modulation
Author(s) -
Yang Liu,
Zhang Fangqi,
Zheng Guoxin,
Sha Jiajun
Publication year - 2019
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2019.06.025
Subject(s) - chirp , modulation (music) , mathematics , physics , acoustics , optics , laser
This paper proposes and studies a novel M ‐ary chirp modulation scheme adopting quasi‐orthogonal waveforms. The Symbol error probability (SEP) of M ‐ary modulation over Additive white Gaussian noise (AWGN) channel is derived based on coherent detection, which is a function of modulation factor and waveform period. Moreover, the SEP is investigated over a channel limited by a nominal bandwidth. Both theoretical analysis and simulations prove that the SEP performance of the proposed 8‐ary chirp modulation outperforms that of conventional 8 Phase shift keying (8PSK) with the same bandwidth efficiency.